mfc 中在 dc中显示位图

 1 DrawImage(const LPBYTE & lpdibBits, const CDC* pDC)
 2 {
　　　　//int bmInfoSize     = BMI_HDSIZE + colorTableSize; 
       //lpdibBits =new BYTE[bmInfoSize + bminfoheader.biSizeImage]; 即BITMAPINFO  的大小加上 位图像素值的大小
 3     CImageDoc* pdoc = (CImageDoc*)GetDocument();
 4     ASSERT_VALID(pdoc);
 5     CDib* viewDib = pdoc->m_pDib;
 6     if(viewDib->bmbits == NULL)
 7         return ;
 8 
 9     LPBYTE               lpSourceBits;
10     LPBITMAPINFO       lpBInfo= viewDib->pBmInfo;
11     HBITMAP               hbitmap, hOldSourceBitmap;
12     HDC                hCompatibleDc, hPicDc= pDC->GetSafeHdc();
13     int                   ImageWidth  = viewDib->bminfoheader.biWidth ,
14                        ImageHeight = viewDib->bminfoheader.biHeight;
15 
16     hbitmap          = CreateDIBSection(hPicDc,lpBInfo,DIB_RGB_COLORS,(void **)&lpSourceBits,NULL, 0);
17     hCompatibleDc = CreateCompatibleDC(hPicDc);
18     CopyMemory(lpSourceBits,lpdibBits+BMI_HDSIZE,viewDib->bminfoheader.biSizeImage);
19     hOldSourceBitmap = (HBITMAP)SelectObject( hCompatibleDc, hbitmap );
20 
21     ::StretchBlt(hPicDc,0,0,ImageWidth,ImageHeight,hCompatibleDc,0,0,ImageWidth,ImageHeight,SRCCOPY);
22     SelectObject( hCompatibleDc, hOldSourceBitmap );
23     DeleteDC( hCompatibleDc );
24     GdiFlush();
25 }
mfc 中在 dc中 显示 位图

mfc 中在 dc中显示位图
